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Two-pull, automatic reset, latch system

a technology of automatic reset and latch system, which is applied in the field of door latches, can solve problems such as time-consuming and laborious problems

Active Publication Date: 2022-03-15
INTEVA PRODUCTS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The system effectively decouples the release lever from the power release system during the first pull in both scenarios, preventing premature release and ensuring reliable operation by maintaining the latch in a decoupled state until the second pull is made, thus enhancing the reliability and safety of the door release mechanism.

Problems solved by technology

Unfortunately, timing is often of concern.
Also, partial pulls may partially unlock the door enough to release the system but does not reset the system.
Yet further, two pulls occurring in quick succession may release the door before the system can tell the controller to power the motor to reset.

Method used

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  • Two-pull, automatic reset, latch system
  • Two-pull, automatic reset, latch system
  • Two-pull, automatic reset, latch system

Examples

Experimental program
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Embodiment Construction

[0045]A detailed description of one or more embodiments of the disclosed apparatus and method are presented herein by way of exemplification and not limitation with reference to the Figures.

[0046]Referring now to FIG. 1, a two-pull, automatic reset, latch system 20 is illustrated with a portion of a housing removed to show internal detail. The latch system 20 includes a stationary structure 22 (e.g., the housing), a release lever 24 (i.e., cable or manual release lever), a release system 25 (e.g., power release system), a coupling lever 28, an override link 30, a reset lever 34 (also see FIGS. 5 and 6), a switch link 38, an auto reset switch 44, and a gear home switch 46. The release system 25 may include a power release lever 26, a gear 32, an electric motor 40, and a worm gear 42. The electric motor 40 of the release system 25 is adapted to drive (i.e., rotate) the worm gear 42, which in-turn drives the gear 32 about a rotation axis 48 and in a rotational driven direction (see arr...

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PUM

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Abstract

A two-pull, automatic reset, latch system is configured to operate during a no-power scenario and a power scenario. The latch system includes a release system, a release lever, and a coupling lever. The manual release lever is pivotally engaged to a stationary structure about a first axis. The coupling lever pivots about a second axis offset from the first axis, and is adapted to couple the release lever to the release system during a no-power scenario and upon two manual actuations of the release lever. The coupling lever is further adapted to maintain decoupling of the release lever from the release system during a power scenario.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims the benefit of 62 / 738,448 filed Sep. 28, 2018, which is incorporated herein by reference in its entirety.BACKGROUND[0002]The subject matter disclosed herein relates to door latches and, more particularly, to two-pull, automatic reset, latch systems.[0003]In some vehicles, door(s) may include a power release latch that features an inside release handle, but may not have a mechanical outside release lever, may not have a key cylinder release lever, or may include a child lock. Various government regulations, or other requirements, may impress that such systems should have a two-pull release system. In a no-power scenario, the first pull of the release cable may not release the latch but may couple the release cable to the latch release system. Upon a second pull of the release cable, the latch will release.[0004]In a power scenario, the first pull may not release the latch, and before the second pull occurs, the syst...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): E05B81/90E05B81/06E05B81/12E05B81/34
CPCE05B81/90E05B81/06E05B81/12E05B81/34E05B85/00E05B81/14E05B77/30
Inventor NEY, DANIEL ALEXANDERPERKINS, DONALD MICHAEL
Owner INTEVA PRODUCTS LLC